The invention discloses a cursor touch control method and a cursor touch control device, and a digital oscilloscope, wherein, the cursor touch control device comprises a display unit, a contact detection unit, a cursor enable unit, a trajectory capture unit and a cursor adjustment unit, the cursor touch control device comprises a display unit, a contact detection unit, a cursor enable unit, a track capture unit and a cursor adjustment unit. As the display unit provides the display capability of the cursor on the touch screen, the corresponding display effect is formed between the cursor line and the information tag, which is convenient for the user to observe the measurement information on the cursor line and the corresponding information tag in real time. As the cursor enabling unit provides the selection condition of the cursor, the user can quickly select the cursor line and the corresponding information label, thus avoiding the situation that the user can select by using the entitykey or the virtual key in the past operation, and improving the operation efficiency of the user; As the cursor adjustment unit provides the convenient function of drag the cursor to adjust the position, the user can directly drag the cursor on the touch screen to realize the cursor measuring operation, and the effect of quickly adjust the position of the cursor is facilitated.